Hanger for trolley-wires.



W. AI MQGALLUM,

HANGER FOR TROLLEY WIRES.

APPLIOATION FILED MAY24,1909.

955,185, Patented Apr. 19,1910.

all, Pg. 6.

IN VEN TOR.

ATTORNEY.

" to connectthe two together.

UNITED STATES PATENT OFFICE.-

WILLIAM ANDREW MCCALLUM, OF CINCINNATI, OHIO.

HANGER FOB TBOLLEY-WIBES.

Specification of Letters Patent. Patented Apr. 19, 1910. Application filed Kay 24,

1909. Serial No. 498,100.

' To all whomtt may concern:

Be it known that I, WILLIAM ANDREW MoCALLuM, a citizen of the United States, residing. at Cincinnati, in the county of Hamilton and State of Ohio, have invented new and useful Improvements'in Hangers for Trolley-Wires, of which the following is a specification.

My invention relates to hangers used for suspending a trolley wire car from a span wire, .or other fixed support, in electric railway service; its object being to provide a simple inexpensive and efficient hanger to which trolley ears may be secured with ease and convenience at any radial angle therewith, while the trolley wire is attached to the ear and the hanger to its. span wire or other support; and which may be as readily detached without disconnecting the other arts.

P I have selected, for illustratin the nature of my improvement, a type 0? hanger in very general use, sometimes known as the oneiece hanger, consisting of an inverte cup-shaped shell, having embedded in compressed insulating material within the cup, a bolt projecting below threaded to engage the trolley ear,all being arts of one unltary and rigid structure. he advantages of this type of han ers have caused them to be largely em loyed because of their insulating quality wliereby ball strains and other insulating adjuncts are avoided; yet they are subject to a serious disadvantage by reason of the necessity of rotating either the hanger or the trolle ear in order This necessity has practically barred their use heretofore in pull-overs on curves, because of interference with the down-projecting arms of; illustrated in the rther referred to the pull over hangers drawings herewith and in this specification) which preventssuch interrotation. This disadvantage mentioned exists in a lesser degree in straight line work, where the hangers are held upon span wires, because in order to interrotate the parts in puttin together or taking apart, the ear must is detached from the trolley wire or the hanger from the span wire; which is sometimes diflicult and expensive in time and labor.

A further general disadvantage of the former construction lies in this, namely: that in securing the trolley ear and hanger together by iuterrotation to seat the connecting bolt of one in the corres onding socket of' the other, the radial relations of the hanger and the ear, when the suspending bolt is screwed home in the ear, may not and generally do not, comport with those 0 the span wire or other support, and the trolley wire; so that it is necessary to turn back the ear upon its sus nding bolt until it and the supported trollt y wire are in proper radial relations. Thus it ha us that the trolley wire is in fact generall y maintained upon a loose connection of its suspen bolt with the ear, which for many reasons is undesirable. To connect the parts also frequently necessitates extra labor and expense in taking down the span wire from its sltilpports or detaching the trolley wire from e ear, inorder to detach the ear from the hanger, in making re airs, etc

To obviate these an otherevils, and produce a hanger applicable to all situations of use is the rime-object of my invention; although wliile especially advantageous in the type of necessarily limited thereto.

To the ends above indicated, my invention consists in a hanger adapted to be secured to the trolley car by rotation of a bolt or stem rotatable in both the ha er and the ear independently of either an without affecting their radial relations or their connection with other able by reverse rotation of said bolt or stem without other disconnection of parts.

' My invention is illustrated in the accompanying drawings, in which:

Figure 1, is an elevation in rspective of a single-piece hanger, emb ying my improvement and constructed as a pull-over fitted with a long trolley ear means of solder a round trolley 2 is an axial cross section of the ban er showing the bolt and its containing soc et in position. Figs. 3 and 4, are detail elevawire.

is a detail showing a variant form of It and socket; and Fig. 6, is a plan of the separable collar.

Referring now to the drawings, A deal nates a on shaped shell, known as cap, whic in the type selected for illustratlon, is provided with a lateral arm, a, for connection by guy wire with a post or hold the trolley wire in a parallel curve with the track. The cap is formed with suitable insulating hangers, itis notparts; and, conversely, detach tions of two forms of bolts or stems; Fig? other support at the outride of a curve, to

'tions heretofore used inner corrugations or ledges to interlock with a filling material, B, in which in construcis rigidly embedded the shank and head 0% an ordinary threaded bolt projecting below the filling to engage the trolley ear E, to sustain the trolley Wire, 7 In my improvement, in lieu of such bolt a short spool or socket-piece C, is embedded, adapted to contain in a rotative connection the shank d of a bolt or stem D, held against longitudinal displacement by a pin a prbjected radially through the shell of the socket-piece into a circumferential groove 8 of the shank d of the bolt or stem.

Immediately adjacent to the lower face of the socket-piece C, the bolt D is enlarged into a flange or head d having plane faces,

to which a wrench may be applied to rotate p the bolt; and below this, the bolt is threaded to the end.

Fi 2 shows the socket-piece G and the bolt in position, and in Fig. 3 the bolt D is axially sectioned to exhibit its solid structure throughout.

In Fig. 4- I have shown the enlargement or head (i dormed separate from the shank, d, as a collar connected rotatively with the stem by a pin, (1 set radially in the collar and projecting into a slightly elongated vertical slot, i in the side of the shank, d,the object being to give the collar a slight vertical play upon the shank, in order that, when the bolt D is seated in the boss 6 of the trolley ear a slight additional turning of the bolt draws the ear E upward thereon, and the collar is compressed between the boss e and the spool C and secures a more rigid connection.

In Fig. 5, I have shown the upper part or shank d of the stem threaded like the lower end, but in the o posite direction, and rovided with the se f-adjusting rotating co lar just above described. The socket piece is correspondingly threaded. The bolt D thus constructed is now an independent element, and seats by its rotation in the socket piece O and in. the boss e at the'same time, while the collar becomes. the wedging element as before. This form of structure may on some accounts be preferred; but it is still within the principle of my invention, which contem lates a rotatable stem seated within and pro ecting beneath the hanger cap, allowing the hanger to be secured in any radial relations.

Fig. 1 shows the hanger attached to. an earl form of ear by screwin the bolt into the oss e, rovided therefor. Such attachment woul be impossible, as will be obvious, if to seat the bolt required the interrotation of either the cap structure A, or'the trolley car E, because of interference of the arm a.

rovement, however, the attach- In my im ected by rotation of the bolt ment is e alone without rotation of the cap or the trolley ear, or detaching either from their other connections, and at any desired radial adjustment of the ear with the hanger.

In the constructions heretofore used, the one-piece or insulated cap-structure could not be a plied to the single or double pullovers or the reason above explained; and it was necessary to insulate the hangers by separate insulators known as ball strains which were objectionable because in case the trolley wheel jumped from its wire, these insulators were frequently injured or destroyed. The use of these is eliminated, and their attendant disadvantages are avoided by my improvement.

In the use of the insulated cap hangers in straight track work where thehanger is suported by a span wire, my improvement greatl facilitates the work of orlginal constructlon and repairs b makin the attachment or detachment o the tro ey ear and hanger independent of their other connections. Moreover in any situation, it insures a more ri junction of the parts with accuracy in re. ial relations.

I claim as my invention and desire to secure by Letters Patent of the United States 1. A suspending hanger for trolley wires, consisting of an integral shield or cap, adapted to be secured to a fixed support and havm a socket opening from below, 2. limited distance into the body of the shield or cap, in combination with a screw threaded suspending bolt, secured rotatably in and projecting below said socket, and adapted to engage by its rotation a correspondingly threaded trolley ear.

2. A suspending hanger for trolley wires, consisting of an integral shield or cap, adapted to be secured to a fixed support and having a socket opening from below, a limited distance into the body of the shield or cap, in combination with a srew threaded suspending bolt, secured rotatably in and projecting below said socket, and adapted to engage by its rotation the corres ondingly threaded trolley car; and a co ar seated upon-the projecting end of the bolt with a limited longitudinal play, adjacent to the cap-body but engaging the bolt when r0- tated.

3. A suspending hanger for trolley wires, embodying an integml shield or cap adapted to be secured to a xed support; a filling of insulating material within the hollow of the cap; a cylindrical metal socket-piece centrally embedded in and sup orted by the filling material and insulate thereby, and a screw threaded sus ending bolt carried rotatively within sai socket-piece wholly within the integral shield or cap and d W jecting below the same, to engage the tr ear.

4. A suspendi hanger for troliley Wires, embodying ashie d or cap to be secured to a fixed su port; a filling of insulating material wit m the hollow of the ca a socket- 5 iece centrally embedded in an supported y the filling material; a screw-threaded bolt adapted to seat in said socket and in a trolley ear below; and a lane-faced collar carried at the zone of sai bolt adjacent to 10 the shield or cap; and a pin carried radially in said collar projecting inwardly into a longitudinally extended slot of the bolt, securing the collar thereto as a non-rotatable en aging element having a limited longitu inal play.

In testimony whereof I havehereunto set my hand in presence of two subscribing witnesses.

WILLIAM ANDREW MCCALLUM. Witnesses:

WALTER A. KNIGHT,

A. L. TILDESLEY. 

